/*重置样式*/
*{
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}
ul, ol{
	list-style: none;
}
a{
	text-decoration: none;
	color: black;
}
img{
	border: none;
	vertical-align: top;
}
b, strong, i, em{
	font-weight: normal;
	font-style: normal;
}

/*定义一些常见的要使用的方法*/
.clear-input{
	border: none;
	outline: none;
}
.ele-middle{
	display: flex;
	justify-content: center;
	align-items: center;
}
.clear-float{
	overflow: hidden;
}